mpls-linux-general

[mpls-linux-general] ldp_linux commands

[narsi p. <na...@ho...>]

hi,
   Can some body  provide me with some examples for a setup(ingress,egress 
and a core router)using ldp_linux commands. I would also like to know 
whether ldp_linux commands have to be used in conjunction with mplsadm 
commands or can be used independently.

thanks in advance

narsi
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[mpls-linux-general] Research Topic

[Wenbiao Z. <wz...@cs...>]

Hi, everyone:

I am a MSc student who is interested in MPLS, 
and would like to do my project/thesis in this
area.

I am new to MPLS, and run into problem when
I decide the topics. I would like to receive
any useful advice from you. Following is 

Currently, I have 2 choices for my topic with
this software
1. implementation of MPLS 
   Install it on Linux and run it, then
   get the traffic to do analysis.
 
   There are following disadvantage for this option:
   1.1 limited LSRs
   Due to limited resource, I could only have 2 Linux 
   hosts at home (connecting to internet through Cable 
   modem) and 1 or 2 Linux PCs at the school. Since only 
   3 or 4 LSRs, will the traffic be good enough for analysis?
   
   1.2 do not know what to analysis
   Even the problem 1.1 does not exist, what kind of analysis
   could I perform based on the traffic

2. Traffic Engineering 
In a MPLS seminar by Juniper, a guru suggested me to work
on traffic Angering.  Due to limited resource, I could only
do a little in traffic Angering. For example, in the software,
RSVP is not implemented in the software. Once it is implemented, 
how could I test it to find out it works or not?

Before I decide to choose one from above 2 options, would any of 
you please answer the questions raised in each of the options and
give me some advice?

Any useful feedback will be highly appreciated.

William Zhang
School of Computing Science
Simon Fraser University
Burnaby, BC
V5A 1S6

RE: [mpls-linux-general] Research Topic

[<sk...@en...>]

> I am a MSc student who is interested in MPLS, 
> and would like to do my project/thesis in this
> area.

I'm almost in the same case.

I have here at school between 6 and 12 linux PC to
do some testing (they are all fitted with 2 ethernet
NIC and some have an ATM NIC).

I am currently writing a test suite to "bench" routers ;
it will generate network flows using tun/tap devices.
it will allow to simulate thousands, and up to millions,
of network flows with different src/dst ip addresses.

I plan to further experiment with LDP, to implement
piggybacking over BGP (zebra) and eventually look after
freebsd implementation. if anybody is already working
on one ot these points, and would like either peer review
(well, "newbie review" should be more appropriate) or
would think it woud be better to turn my efforts in
other directions, feel free to contact me.

Jerome Petazzoni <jp...@en...>

Re: [mpls-linux-general] Research Topic

[James R. L. <jl...@mi...>]

Hello all,

First of all, it is very cool that you are both looking to do some research
with MPLS, go for it!

Second, you should both look into using User Mode Linux to increase the
number of LER/LSR you have to work with.  UML allows you to run the Linux
kernel as a set of user land threads.  THus you can run muliple copies
of it.  I have written an ethernet driver for it, which allows you to
network them together.  Check out:

http://user-mode-linux.sourceforge.net/

NOTE: you will want to grab the latest version of the virtual ethernet driver
and probably contact me for help :-)  If anyone is interested in how to
use this, e-mail the list and I will post a LONG how-to for everyone.

Third, Yon has been working on integrating LDP into Zebra.  I haven't had a
chance to test it yet, but it sounds like he has made lot of progress.

Forth, I will be posting a "near 1.0" version of mpls-linux soon.  This will
hopefully flush out any remaining bugs and provide a stable full feature
MPLS implementation for people to play with.  THen the real fun begins, 
working toward 2.0 which will scramble things up quite a bit.  I'll post
another message with what is planned for 2.0.

Fifth, Layer 2 Cross Connects (draft-martini-l2circuit-trans-mpls-05.txt
and draft-martini-l2circuit-encap-mpls-01.txt) and MPLS/BGP/VPNS (rfc2548bis)
are the services ISP are clamoring to offer.  Not much has been done on the
lines of researching for these (none that I have seen).

Sixth ... I could on for hours.  If your looking for more info
let me know.

Jim

On Wed, Mar 21, 2001 at 02:36:15PM +0100, sk...@en... wrote:
> 
> > I am a MSc student who is interested in MPLS, 
> > and would like to do my project/thesis in this
> > area.
> 
> I'm almost in the same case.
> 
> I have here at school between 6 and 12 linux PC to
> do some testing (they are all fitted with 2 ethernet
> NIC and some have an ATM NIC).
> 
> I am currently writing a test suite to "bench" routers ;
> it will generate network flows using tun/tap devices.
> it will allow to simulate thousands, and up to millions,
> of network flows with different src/dst ip addresses.
> 
> I plan to further experiment with LDP, to implement
> piggybacking over BGP (zebra) and eventually look after
> freebsd implementation. if anybody is already working
> on one ot these points, and would like either peer review
> (well, "newbie review" should be more appropriate) or
> would think it woud be better to turn my efforts in
> other directions, feel free to contact me.
> 
> Jerome Petazzoni <jp...@en...>
> 
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> http://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

[mpls-linux-general] mpls labels in ethernet destination address : silly or interesting ?

[<sk...@en...>]

has anybody thought about embedding MPLS labels in ethernet headers,
instead of using a shim ? I thought about using last four bytes of
destination MAC address to carry MPLS labels. it would require
the receiver to work in promiscuous mode, or to set the multi/broad
cast bit of the destination MAC address, or to find some hack in
the NIC driver code to allow some kind of filtering.

would there be some interest in doing that way, or is there
some major pitfall I did not think of ?

Re: [mpls-linux-general] mpls labels in ethernet destination address : silly or interesting ?

[James R. L. <jl...@mi...>]

Hello,

In te early days of MPLS there was a suggestion to extend the ethernet header
to do this, but I don't think the idea ever took.

On Wed, Mar 21, 2001 at 03:37:24PM +0100, sk...@en... wrote:
> 
> has anybody thought about embedding MPLS labels in ethernet headers,
> instead of using a shim ? I thought about using last four bytes of
> destination MAC address to carry MPLS labels. it would require
> the receiver to work in promiscuous mode, or to set the multi/broad
> cast bit of the destination MAC address, or to find some hack in
> the NIC driver code to allow some kind of filtering.

You can't really just grab the last 4 octects because the resulting
MAC (after overwritting wit the label) might be a valid MAC used by a machine
on the network.

Jim

> 
> would there be some interest in doing that way, or is there
> some major pitfall I did not think of ?
> 
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> http://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

Re: [mpls-linux-general] Research Topic

[Sanda D. <dr...@ee...>]

	Hi!
	
	I am subscribed to: mpl...@li...
and I got your mail with the solution for testing MPLS.
	I am also a Ph.D. student and I am studying MPLS and this solution
suits me very well.
	The problem is that I tried to install uml but I got this error:

	Kernel panic: VFS: Unable to mount root fs on 62:00


	I know that other people had the same problem in August last year
and I read the archives from uml mailing list but they didn't helped me.

	Had anyone the same problem and can anyone help me with this
problem?

Regards,
	Sanda

On Wed, 21 Mar 2001, James R. Leu wrote:

> Hello all,
> 
> First of all, it is very cool that you are both looking to do some research
> with MPLS, go for it!
> 
> Second, you should both look into using User Mode Linux to increase the
> number of LER/LSR you have to work with.  UML allows you to run the Linux
> kernel as a set of user land threads.  THus you can run muliple copies
> of it.  I have written an ethernet driver for it, which allows you to
> network them together.  Check out:
> 
> http://user-mode-linux.sourceforge.net/
> 
> NOTE: you will want to grab the latest version of the virtual ethernet driver
> and probably contact me for help :-)  If anyone is interested in how to
> use this, e-mail the list and I will post a LONG how-to for everyone.
> 
> Third, Yon has been working on integrating LDP into Zebra.  I haven't had a
> chance to test it yet, but it sounds like he has made lot of progress.
> 
> Forth, I will be posting a "near 1.0" version of mpls-linux soon.  This will
> hopefully flush out any remaining bugs and provide a stable full feature
> MPLS implementation for people to play with.  THen the real fun begins, 
> working toward 2.0 which will scramble things up quite a bit.  I'll post
> another message with what is planned for 2.0.
> 
> Fifth, Layer 2 Cross Connects (draft-martini-l2circuit-trans-mpls-05.txt
> and draft-martini-l2circuit-encap-mpls-01.txt) and MPLS/BGP/VPNS (rfc2548bis)
> are the services ISP are clamoring to offer.  Not much has been done on the
> lines of researching for these (none that I have seen).
> 
> Sixth ... I could on for hours.  If your looking for more info
> let me know.
> 
> Jim
> 
> On Wed, Mar 21, 2001 at 02:36:15PM +0100, sk...@en... wrote:
> > 
> > > I am a MSc student who is interested in MPLS, 
> > > and would like to do my project/thesis in this
> > > area.
> > 
> > I'm almost in the same case.
> > 
> > I have here at school between 6 and 12 linux PC to
> > do some testing (they are all fitted with 2 ethernet
> > NIC and some have an ATM NIC).
> > 
> > I am currently writing a test suite to "bench" routers ;
> > it will generate network flows using tun/tap devices.
> > it will allow to simulate thousands, and up to millions,
> > of network flows with different src/dst ip addresses.
> > 
> > I plan to further experiment with LDP, to implement
> > piggybacking over BGP (zebra) and eventually look after
> > freebsd implementation. if anybody is already working
> > on one ot these points, and would like either peer review
> > (well, "newbie review" should be more appropriate) or
> > would think it woud be better to turn my efforts in
> > other directions, feel free to contact me.
> > 
> > Jerome Petazzoni <jp...@en...>
> > 
> > 
> > _______________________________________________
> > mpls-linux-general mailing list
> > mpl...@li...
> > http://lists.sourceforge.net/lists/listinfo/mpls-linux-general
> 
> -- 
> James R. Leu
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> http://lists.sourceforge.net/lists/listinfo/mpls-linux-general
> 

Re: [mpls-linux-general] Research Topic

[Yon U. <uk...@rz...>]

On Thu, 29 Mar 2001, Sanda Dragos wrote:
[snip]
> 	The problem is that I tried to install uml but I got this error:
>
> 	Kernel panic: VFS: Unable to mount root fs on 62:00

make sure your root fs file is named as described in the docs and in the
same directory as you are starting uml, a soft link to the real fs-file is
enough.

HTH, HAND
 yon

Re: [mpls-linux-general] Research Topic

[Sanda D. <dr...@ee...>]

	Thank's very much for your help. It worked but now it stops right
after:
------------------------------------------------------------
...
...
Started device management daemon for /dev
		Welcome to Red Hat Linux
	Press 'I' to enter interactive startup
Mounting proc filesystem:
------------------------------------------------------------

Can you help me with this one too?

Regards,
	Sanda

Re: [mpls-linux-general] Research Topic

[Yon U. <uk...@rz...>]

On Fri, 30 Mar 2001, Sanda Dragos wrote:
> 	Thank's very much for your help. It worked but now it stops right
> after:
> ------------------------------------------------------------
> ...
> ...
> Started device management daemon for /dev
> 		Welcome to Red Hat Linux
> 	Press 'I' to enter interactive startup
> Mounting proc filesystem:
> ------------------------------------------------------------
>
> Can you help me with this one too?

 Hmmm,I'm clueless but I can speculate. I've never used RH, only
mandrake and then I just as a quick install on an alien box, where I
didn't start learning the distro, I just wanted it to work, fast.

 Which version of RH are you using? I see it is a more or less new one,
with devfs support, it might be, that it (devfs support) is not wholly
integrated into the system. Try mounting the rootfs on your host system
(losetup ...;mount ...) and check out the /dev directory, it should have
the usual devices (say ~100 files). Edit the /etc/fstab from the uml
rootfs and change the line "/dev devfs ..." to "/devfs devfs ..." and
create the /devfs dir in the rootfs-file. Umount, boot uml.

 If that works, I shall be playing in the lottery, the moon is in my
quadrant it seems. Otherwise I'm clueless.

greetings,
 yon